[PATCH v1 07/11] cpufreq: tegra20: Check if this is Tegra20 machine

Dmitry Osipenko
2018-05-17T18:02:30Z

Don't even try to request the clocks during of module initialization on
non-Tegra20 machines (this is the case for a multi-platform kernel) for
consistency.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
drivers/cpufreq/tegra20-cpufreq.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/cpufreq/tegra20-cpufreq.c b/drivers/cpufreq/tegra20-cpufreq.c
index 147ae3e14f18..797c61c74b65 100644
--- a/drivers/cpufreq/tegra20-cpufreq.c
+++ b/drivers/cpufreq/tegra20-cpufreq.c
@@ -19,6 +19,7 @@
#include <linux/clk.h>
#include <linux/cpufreq.h>
#include <linux/module.h>
+#include <linux/of.h>

static struct cpufreq_frequency_table freq_table[] = {
{ .frequency = 216000 },
@@ -155,6 +156,9 @@ static int __init tegra_cpufreq_init(void)
{
int err;

+ if (!of_machine_is_compatible("nvidia,tegra20"))
+ return -ENODEV;
+
cpu_clk = clk_get_sys(NULL, "cclk");
if (IS_ERR(cpu_clk))
return PTR_ERR(cpu_clk);
--
2.17.0